Abstract
The molecular mobility (MM) of polar groups present in poly- p-chlorostyrene in two thermodynamically differing solvents, i.e. a “good” solvent such as toluene, and a “poor” one such as isopropylbenzene, was studied. It was found that the MM parameters in concentrated polymer solutions depend only on the volume fraction of the polymer present, and are independent of the thermodynamic quality of the solvent. The effect of this quality will be evident at moderate polymer concentrations at φ 2<0·4. The MM will be larger in a good solvent. The differences in the concentration dependence of the parameters characterizing the MM in the 2 solvents enabled us to come to some conclusions about the structure present in the solution within this concentration range.
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